Thanks for taking the time to reply Christine. I am aware that 'sklo' means glass. I was merely using the term as an abreviation for Sklo Union which I believed the vase to be. As for my reference to 'Bohemia' I understand that Bohemia has an area of 52,750 km² and today is home to 6.25 million of the Czech Republic's 10.3 million inhabitants. Therefore I would assume that any product, glass or otherwise, produced within this geographical border could be described as Bohemian. However none of this really helps in identifying the vase in question.
Once again thank you for your interest and taking the time to reply.